{"id":2153,"date":"2025-03-24T08:48:10","date_gmt":"2025-03-23T23:48:10","guid":{"rendered":"https:\/\/dexall.co.jp\/articles\/?p=2153"},"modified":"2025-03-24T08:48:35","modified_gmt":"2025-03-23T23:48:35","slug":"boost-asio%e5%ae%8c%e5%85%a8%e3%82%ac%e3%82%a4%e3%83%892024%ef%bc%9a%e5%8a%b9%e7%8e%87%e7%9a%84%e3%81%aa%e9%9d%9e%e5%90%8c%e6%9c%9f%e3%83%8d%e3%83%83%e3%83%88%e3%83%af%e3%83%bc%e3%82%af%e3%83%97","status":"publish","type":"post","link":"https:\/\/dexall.co.jp\/articles\/?p=2153","title":{"rendered":"Boost.Asio\u5b8c\u5168\u30ac\u30a4\u30c92024\uff1a\u52b9\u7387\u7684\u306a\u975e\u540c\u671f\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5165\u9580"},"content":{"rendered":"\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>116<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>121<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>128<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\" data-dialog-title=\"\u76ee\u6b21\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">  <li class=\"first\">    <a href=\"#i-0\">Boost.Asio\u3068\u306f\uff1a\u73fe\u4ee3\u306eC++\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-1\">\u9ad8\u6027\u80fd\u306a\u975e\u540c\u671fI\/O\u64cd\u4f5c\u3092\u5b9f\u73fe\u3059\u308b\u30af\u30ed\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30e9\u30a4\u30d6\u30e9\u30ea<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-2\">Boost.Asio\u304c\u9078\u3070\u308c\u308b3\u3064\u306e\u7406\u7531<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-3\">Boost.Asio\u306e\u57fa\u672c\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-4\">I\/O\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3068\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u30fc<\/a>      <\/li>      <li>        <a href=\"#i-5\">\u975e\u540c\u671f\u64cd\u4f5c\u306e\u57fa\u790e<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-6\">\u30b3\u30eb\u30fc\u30c1\u30f3\u306b\u3088\u308b\u5408\u7406\u7684\u306a\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-7\">\u5b9f\u8df5Boost.Asio\u958b\u767a\u74b0\u5883\u69cb\u7bc9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-8\">\u5fc5\u8981\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6e96\u5099<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-9\">VSCode\u3067\u306e\u52b9\u7387\u7684\u306a\u958b\u767a\u8a2d\u5b9a<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-10\">Boost.Asio\u306b\u3088\u308b\u9ad8\u6027\u80fd\u30b5\u30fc\u30d0\u30fc\u306e\u5b9f\u88c5\u624b\u9806<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-11\">\u57fa\u672c\u7684\u306aTCP\u30b5\u30fc\u30d0\u30fc\u306e\u5b9f\u88c5<\/a>      <\/li>      <li>        <a href=\"#i-12\">\u975e\u540c\u671f\u30a2\u30af\u30bb\u30d7\u30bf\u30fc\u306e\u5b9f\u88c5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-13\">\u30bb\u30c3\u30b7\u30e7\u30f3\u7ba1\u7406\u306e\u5b9f\u88c5<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-14\">Boost.Asio\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u6226\u7565<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-15\">\u4e00\u822c\u7684\u306a\u30a8\u30e9\u30fc\u30d1\u30bf\u30fc\u30f3\u3068\u5bfe\u51e6\u6cd5<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-16\">\u4f8b\u5916\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9<\/a>      <\/li>    <\/ul>  <\/li>  <li>    <a href=\"#i-17\">Boost.Asio\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-18\">\u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u306e\u6b63\u3057\u3044\u8a2d\u5b9a<\/a>      <\/li>      <li>        <a href=\"#i-19\">\u30d0\u30c3\u30d5\u30a1\u7ba1\u7406\u306e\u6700\u9069\u5316<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-20\">\u975e\u540c\u671f\u64cd\u4f5c\u306e\u30c1\u30a7\u30fc\u30f3\u5316<\/a>      <\/li>    <\/ul>  <\/li>  <li class=\"last\">    <a href=\"#i-21\">Boost.Asio\u306e\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/a>    <ul class=\"menu_level_1\">      <li class=\"first\">        <a href=\"#i-22\">HTTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u5b9f\u88c5\u4f8b<\/a>      <\/li>      <li>        <a href=\"#i-23\">WebSocket\u30b5\u30fc\u30d0\u30fc\u306e\u5b9f\u88c5\u4f8b<\/a>      <\/li>      <li class=\"last\">        <a href=\"#i-24\">UDP\u30d9\u30fc\u30b9\u306e\u30b2\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u5b9f\u88c5\u4f8b<\/a>      <\/li>    <\/ul>  <\/li><\/ul>\n      <a href=\"#\" class=\"sgb-toc-button js-toc-button\" rel=\"nofollow\" data-open-dialog=\"true\"><i class=\"fa fa-list\"><\/i><span class=\"sgb-toc-button__text\">\u76ee\u6b21\u3078<\/span><\/a>\n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-0\">Boost.Asio\u3068\u306f\uff1a\u73fe\u4ee3\u306eC++\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-1\">\u9ad8\u6027\u80fd\u306a\u975e\u540c\u671fI\/O\u64cd\u4f5c\u3092\u5b9f\u73fe\u3059\u308b\u30af\u30ed\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u30e9\u30a4\u30d6\u30e9\u30ea<\/h3>\n\n\n\n<p>Boost.Asio\u306f\u3001C++\u958b\u767a\u8005\u306b\u3068\u3063\u3066\u5f37\u529b\u306a\u5473\u65b9\u3068\u306a\u308b\u975e\u540c\u671fI\/O\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u3059\u3002\u3053\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306f\u3001\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3084\u305d\u306e\u4ed6\u306e\u975e\u540c\u671f\u64cd\u4f5c\u3092\u52b9\u7387\u7684\u306b\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306e\u5305\u62ec\u7684\u306a\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>Boost.Asio\u306e\u4e3b\u306a\u7279\u5fb4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30af\u30ed\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u5bfe\u5fdc<\/strong>\uff1aWindows\u3001Linux\u3001macOS\u306a\u3069\u3001\u4e3b\u8981\u306a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u52d5\u4f5c<\/li>\n\n\n\n<li><strong>\u6700\u65b0\u306eC++\u6a19\u6e96\u3068\u306e\u7d71\u5408<\/strong>\uff1aC++11\u4ee5\u964d\u306e\u6a5f\u80fd\u3092\u6d3b\u7528\u3057\u3001\u30e2\u30c0\u30f3\u306aC++\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u30b5\u30dd\u30fc\u30c8<\/li>\n\n\n\n<li><strong>\u8c4a\u5bcc\u306a\u6a5f\u80fd\u30bb\u30c3\u30c8<\/strong>\uff1aTCP\/IP\u3001UDP\u3001\u30b7\u30ea\u30a2\u30eb\u30dd\u30fc\u30c8\u3001\u30bf\u30a4\u30de\u30fc\u3001\u30d5\u30a1\u30a4\u30ebI\/O\u306a\u3069\u3092\u30b5\u30dd\u30fc\u30c8<\/li>\n\n\n\n<li><strong>\u30b9\u30b1\u30fc\u30e9\u30d6\u30eb\u306a\u8a2d\u8a08<\/strong>\uff1a\u30b7\u30f3\u30b0\u30eb\u30b9\u30ec\u30c3\u30c9\u304b\u3089\u5927\u898f\u6a21\u30de\u30eb\u30c1\u30b9\u30ec\u30c3\u30c9\u30b7\u30b9\u30c6\u30e0\u307e\u3067\u5bfe\u5fdc\u53ef\u80fd<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-2\">Boost.Asio\u304c\u9078\u3070\u308c\u308b3\u3064\u306e\u7406\u7531<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u751f\u7523\u6027\u306e\u5411\u4e0a<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u76f4\u611f\u7684\u306aAPI\u30c7\u30b6\u30a4\u30f3<\/li>\n\n\n\n<li>\u8c4a\u5bcc\u306a\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u3068\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9<\/li>\n\n\n\n<li>\u5e83\u7bc4\u306a\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u30b5\u30dd\u30fc\u30c8<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   \/\/ \u30b7\u30f3\u30d7\u30eb\u306aTCP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u4f8b\n   boost::asio::io_context io_context;\n   tcp::resolver resolver(io_context);\n   tcp::socket socket(io_context);\n\n   \/\/ \u975e\u540c\u671f\u63a5\u7d9a\u306e\u7c21\u5358\u306a\u5b9f\u88c5\n   async_connect(socket, \n       resolver.resolve(\"example.com\", \"80\"),\n       [](const boost::system::error_code&amp; error) {\n           if (!error) {\n               std::cout &lt;&lt; \"\u63a5\u7d9a\u6210\u529f!\" &lt;&lt; std::endl;\n           }\n       });<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>\u9ad8\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u52b9\u7387\u7684\u306a\u30a4\u30d9\u30f3\u30c8\u99c6\u52d5\u578b\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/li>\n\n\n\n<li>\u30b7\u30b9\u30c6\u30e0\u30ea\u30bd\u30fc\u30b9\u306e\u6700\u9069\u306a\u5229\u7528<\/li>\n\n\n\n<li>\u4f4e\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u306a\u64cd\u4f5c\u306e\u5b9f\u73fe<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   \/\/ \u52b9\u7387\u7684\u306a\u30d0\u30c3\u30d5\u30a1\u7ba1\u7406\u306e\u4f8b\n   boost::asio::streambuf buffer;\n   boost::asio::async_read_until(socket, \n       buffer, \n       \"\\n\",\n       [](const boost::system::error_code&amp; error, std::size_t bytes_transferred) {\n           \/\/ \u30bc\u30ed\u30b3\u30d4\u30fc\u3067\u30c7\u30fc\u30bf\u3092\u51e6\u7406\n       });<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>\u67d4\u8edf\u306a\u8a2d\u8a08<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u53ef\u80fd\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/li>\n\n\n\n<li>\u65e2\u5b58\u306e\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u3068\u306e\u7d71\u5408\u304c\u5bb9\u6613<\/li>\n\n\n\n<li>\u5c06\u6765\u306e\u62e1\u5f35\u6027\u3092\u8003\u616e\u3057\u305f\u8a2d\u8a08<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   \/\/ \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u4f7f\u7528\u4f8b\n   using custom_allocator_type = MyCustomAllocator&lt;char&gt;;\n   boost::asio::basic_streambuf&lt;custom_allocator_type&gt; custom_buffer;<\/pre>\n\n\n\n<p>Boost.Asio\u306f\u3001\u73fe\u4ee3\u306eC++\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306b\u304a\u3044\u3066\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8ab2\u984c\u3092\u52b9\u679c\u7684\u306b\u89e3\u6c7a\u3057\u307e\u3059\uff1a<\/p>\n\n\n<div id=\"id-6aa8dade-f443-4b35-bf9e-dbb7f6cefdfb\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u8ab2\u984c<\/th><th>Boost.Asio\u306b\u3088\u308b\u89e3\u6c7a\u7b56<\/th><\/tr><\/thead><tbody><tr><td>\u8907\u96d1\u306a\u975e\u540c\u671f\u51e6\u7406<\/td><td>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u3001Future\u3001\u30b3\u30eb\u30fc\u30c1\u30f3\u306a\u3069\u8907\u6570\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30e2\u30c7\u30eb\u3092\u63d0\u4f9b<\/td><\/tr><tr><td>\u30af\u30ed\u30b9\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u5bfe\u5fdc<\/td><td>\u7d71\u4e00\u3055\u308c\u305fAPI\u306b\u3088\u308b\u79fb\u690d\u6027\u306e\u9ad8\u3044\u30b3\u30fc\u30c9<\/td><\/tr><tr><td>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316<\/td><td>\u52b9\u7387\u7684\u306a\u30a4\u30d9\u30f3\u30c8\u51e6\u7406\u3068\u67d4\u8edf\u306a\u30d0\u30c3\u30d5\u30a1\u7ba1\u7406<\/td><\/tr><tr><td>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/td><td>\u4e00\u8cab\u6027\u306e\u3042\u308b\u30a8\u30e9\u30fc\u30b3\u30fc\u30c9\u30b7\u30b9\u30c6\u30e0\u3068\u4f8b\u5916\u51e6\u7406<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u7279\u5fb4\u306b\u3088\u308a\u3001Boost.Asio\u306f\u591a\u304f\u306e\u958b\u767a\u8005\u304b\u3089\u4fe1\u983c\u3055\u308c\u3001\u5b9f\u969b\u306e\u88fd\u54c1\u958b\u767a\u3067\u5e83\u304f\u63a1\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u6b21\u7bc0\u3067\u306f\u3001Boost.Asio\u306e\u57fa\u672c\u6982\u5ff5\u306b\u3064\u3044\u3066\u3001\u3088\u308a\u8a73\u3057\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">Boost.Asio\u306e\u57fa\u672c\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-4\">I\/O\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3068\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u30fc<\/h3>\n\n\n\n<p>Boost.Asio\u306e\u4e2d\u6838\u3068\u306a\u308b\u6982\u5ff5\u306f\u3001I\/O\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3068\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u30fc\u3067\u3059\u3002\u3053\u308c\u3089\u306f\u975e\u540c\u671f\u51e6\u7406\u306e\u5b9f\u884c\u57fa\u76e4\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>I\/O\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\uff08io_context\uff09<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u975e\u540c\u671f\u64cd\u4f5c\u3092\u7ba1\u7406\u3059\u308b\u4e2d\u592e\u30cf\u30d6\u3068\u3057\u3066\u6a5f\u80fd<\/li>\n\n\n\n<li>\u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u3092\u63d0\u4f9b\u3057\u3001\u975e\u540c\u671f\u30bf\u30b9\u30af\u306e\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3092\u884c\u3046<\/li>\n\n\n\n<li>\u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u4e26\u884c\u51e6\u7406\u3092\u5b9f\u73fe<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u57fa\u672c\u7684\u306aI\/O\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u306e\u4f7f\u7528\u4f8b\nboost::asio::io_context io_context;\n\n\/\/ \u8907\u6570\u30b9\u30ec\u30c3\u30c9\u3067\u306e\u5b9f\u884c\nstd::vector&lt;std::thread&gt; threads;\nfor(int i = 0; i &lt; 4; ++i) {\n    threads.emplace_back([&amp;io_context]() {\n        io_context.run();  \/\/ \u30a4\u30d9\u30f3\u30c8\u30eb\u30fc\u30d7\u306e\u5b9f\u884c\n    });\n}<\/pre>\n\n\n\n<p><strong>\u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u30fc\uff08executor\uff09<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u975e\u540c\u671f\u64cd\u4f5c\u306e\u5b9f\u884c\u65b9\u6cd5\u3092\u5b9a\u7fa9<\/li>\n\n\n\n<li>\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u53ef\u80fd\u306a\u5b9f\u884c\u30dd\u30ea\u30b7\u30fc\u3092\u63d0\u4f9b<\/li>\n\n\n\n<li>\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u64cd\u4f5c\u3092\u4fdd\u8a3c<\/li>\n<\/ul>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u30fc\u306e\u53d6\u5f97\u3068\u4f7f\u7528\nauto executor = io_context.get_executor();\n\n\/\/ \u30a8\u30b0\u30bc\u30ad\u30e5\u30fc\u30bf\u30fc\u3092\u4f7f\u7528\u3057\u305f\u975e\u540c\u671f\u30bf\u30b9\u30af\u306e\u6295\u5165\nboost::asio::post(executor, []() {\n    std::cout &lt;&lt; \"\u975e\u540c\u671f\u30bf\u30b9\u30af\u304c\u5b9f\u884c\u3055\u308c\u307e\u3057\u305f\" &lt;&lt; std::endl;\n});<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-5\">\u975e\u540c\u671f\u64cd\u4f5c\u306e\u57fa\u790e<\/h3>\n\n\n\n<p>Boost.Asio\u306b\u304a\u3051\u308b\u975e\u540c\u671f\u64cd\u4f5c\u306f\u3001\u4ee5\u4e0b\u306e3\u3064\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u30e2\u30c7\u30eb\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af\u30d9\u30fc\u30b9\u306e\u30a2\u30d7\u30ed\u30fc\u30c1<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u975e\u540c\u671f\u8aad\u307f\u8fbc\u307f\u306e\u4f8b\nsocket.async_read_some(\n    boost::asio::buffer(data),\n    [](boost::system::error_code ec, std::size_t length) {\n        if (!ec) {\n            std::cout &lt;&lt; \"\u30c7\u30fc\u30bf\u53d7\u4fe1: \" &lt;&lt; length &lt;&lt; \"\u30d0\u30a4\u30c8\" &lt;&lt; std::endl;\n        }\n    });<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li><strong>Future\/Promise\u30d1\u30bf\u30fc\u30f3<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ Future\/Promise\u3092\u4f7f\u7528\u3057\u305f\u975e\u540c\u671f\u64cd\u4f5c\nstd::future&lt;std::size_t&gt; fut = \n    boost::asio::async_read(socket,\n        boost::asio::buffer(data),\n        boost::asio::use_future);  \/\/ Future\u3092\u8fd4\u3059<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>Completion Token\u306e\u6d3b\u7528<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">\/\/ \u30ab\u30b9\u30bf\u30e0CompletionToken\u306e\u4f7f\u7528\nauto custom_token = [](auto&amp;&amp; ... args) {\n    \/\/ \u5b8c\u4e86\u6642\u306e\u51e6\u7406\u3092\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\n};\nsocket.async_read_some(boost::asio::buffer(data), custom_token);<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-6\">\u30b3\u30eb\u30fc\u30c1\u30f3\u306b\u3088\u308b\u5408\u7406\u7684\u306a\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0<\/h3>\n\n\n\n<p>C++20\u306e\u30b3\u30eb\u30fc\u30c1\u30f3\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u975e\u540c\u671f\u30b3\u30fc\u30c9\u3092\u3088\u308a\u30b7\u30f3\u30d7\u30eb\u306b\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">boost::asio::awaitable&lt;void&gt; async_operation()\n{\n    try {\n        boost::asio::ip::tcp::socket socket(co_await boost::asio::this_coro::executor);\n\n        \/\/ \u975e\u540c\u671f\u63a5\u7d9a\n        co_await socket.async_connect(\n            endpoint,\n            boost::asio::use_awaitable\n        );\n\n        \/\/ \u975e\u540c\u671f\u8aad\u307f\u8fbc\u307f\n        std::vector&lt;char&gt; data(1024);\n        std::size_t n = co_await socket.async_read_some(\n            boost::asio::buffer(data),\n            boost::asio::use_awaitable\n        );\n\n        std::cout &lt;&lt; \"\u53d7\u4fe1\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba: \" &lt;&lt; n &lt;&lt; std::endl;\n    }\n    catch (const std::exception&amp; e) {\n        std::cerr &lt;&lt; \"\u30a8\u30e9\u30fc: \" &lt;&lt; e.what() &lt;&lt; std::endl;\n    }\n}<\/pre>\n\n\n\n<p>\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n<div id=\"id-92a96314-d9bd-4f89-b797-b7f9a6f8cd3e\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30d1\u30bf\u30fc\u30f3<\/th><th>\u4f7f\u7528\u5834\u9762<\/th><th>\u30e1\u30ea\u30c3\u30c8<\/th><\/tr><\/thead><tbody><tr><td>\u30b3\u30fc\u30eb\u30d0\u30c3\u30af<\/td><td>\u30b7\u30f3\u30d7\u30eb\u306a\u975e\u540c\u671f\u64cd\u4f5c<\/td><td>\u5b9f\u88c5\u304c\u7c21\u5358\u3001\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u5c11\u306a\u3044<\/td><\/tr><tr><td>Future\/Promise<\/td><td>\u7d50\u679c\u306e\u5f85\u3061\u5408\u308f\u305b\u304c\u5fc5\u8981\u306a\u5834\u5408<\/td><td>\u540c\u671f\u7684\u306a\u30b3\u30fc\u30c9\u3068\u306e\u7d71\u5408\u304c\u5bb9\u6613<\/td><\/tr><tr><td>\u30b3\u30eb\u30fc\u30c1\u30f3<\/td><td>\u8907\u96d1\u306a\u975e\u540c\u671f\u30d5\u30ed\u30fc<\/td><td>\u30b3\u30fc\u30c9\u306e\u53ef\u8aad\u6027\u304c\u9ad8\u304f\u3001\u4fdd\u5b88\u304c\u5bb9\u6613<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u57fa\u672c\u6982\u5ff5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001Boost.Asio\u3092\u4f7f\u7528\u3057\u305f\u52b9\u7387\u7684\u306a\u975e\u540c\u671f\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u6b21\u7bc0\u3067\u306f\u3001\u5b9f\u969b\u306e\u958b\u767a\u74b0\u5883\u306e\u69cb\u7bc9\u65b9\u6cd5\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-7\">\u5b9f\u8df5Boost.Asio\u958b\u767a\u74b0\u5883\u69cb\u7bc9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-8\">\u5fc5\u8981\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u3068\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u6e96\u5099<\/h3>\n\n\n\n<p>Boost.Asio\u3092\u4f7f\u7528\u3059\u308b\u305f\u3081\u306e\u958b\u767a\u74b0\u5883\u3092\u6574\u3048\u308b\u624b\u9806\u3092\u3001OS\u3054\u3068\u306b\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>Windows\u74b0\u5883\u3067\u306e\u6e96\u5099<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30b3\u30f3\u30d1\u30a4\u30e9\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # Visual Studio Build Tools\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\uff08\u7ba1\u7406\u8005\u6a29\u9650\u3067\u5b9f\u884c\uff09\n   winget install Microsoft.VisualStudio.2022.BuildTools<\/pre>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>Boost\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   # vcpkg\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\n   git clone https:\/\/github.com\/Microsoft\/vcpkg.git\n   cd vcpkg\n   .\\bootstrap-vcpkg.bat\n   .\\vcpkg install boost:x64-windows<\/pre>\n\n\n\n<p><strong>Linux\u74b0\u5883\u3067\u306e\u6e96\u5099<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># Ubuntu\/Debian\u306e\u5834\u5408\nsudo apt update\nsudo apt install build-essential\nsudo apt install libboost-all-dev\n\n# CentOS\/RHEL\u306e\u5834\u5408\nsudo yum groupinstall \"Development Tools\"\nsudo yum install boost-devel<\/pre>\n\n\n\n<p><strong>macOS\u74b0\u5883\u3067\u306e\u6e96\u5099<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\"># Homebrew\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\nbrew install boost\nbrew install cmake<\/pre>\n\n\n\n<p>\u5fc5\u8981\u306a\u6700\u5c0f\u30d0\u30fc\u30b8\u30e7\u30f3\u8981\u4ef6\uff1a<\/p>\n\n\n<div id=\"id-f611cfac-1916-4443-9046-f5b76ff74c5c\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/th><th>\u6700\u5c0f\u30d0\u30fc\u30b8\u30e7\u30f3<\/th><th>\u63a8\u5968\u30d0\u30fc\u30b8\u30e7\u30f3<\/th><\/tr><\/thead><tbody><tr><td>C++\u30b3\u30f3\u30d1\u30a4\u30e9<\/td><td>C++14\u5bfe\u5fdc<\/td><td>C++20\u5bfe\u5fdc<\/td><\/tr><tr><td>Boost<\/td><td>1.66.0<\/td><td>1.84.0\u4ee5\u4e0a<\/td><\/tr><tr><td>CMake<\/td><td>3.10<\/td><td>3.22\u4ee5\u4e0a<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-9\">VSCode\u3067\u306e\u52b9\u7387\u7684\u306a\u958b\u767a\u8a2d\u5b9a<\/h3>\n\n\n\n<p>VSCode\u3067Boost.Asio\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u63a8\u5968\u8a2d\u5b9a\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5fc5\u8981\u306a\u62e1\u5f35\u6a5f\u80fd\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\/C++<\/li>\n\n\n\n<li>CMake Tools<\/li>\n\n\n\n<li>C++ TestMate<\/li>\n\n\n\n<li>Clang-Format<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>workspace\u8a2d\u5b9a\uff08.vscode\/settings.json\uff09<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">{\n    \"C_Cpp.default.configurationProvider\": \"ms-vscode.cmake-tools\",\n    \"C_Cpp.default.includePath\": [\n        \"${workspaceFolder}\/**\",\n        \"${vcpkgRoot}\/x64-windows\/include\",  \/\/ Windows\u306e\u5834\u5408\n        \"\/usr\/local\/include\",                \/\/ macOS\/Linux\u306e\u5834\u5408\n        \"\/usr\/include\"                       \/\/ Linux\u306e\u5834\u5408\n    ],\n    \"C_Cpp.clang_format_style\": \"file\",\n    \"editor.formatOnSave\": true\n}<\/pre>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li><strong>CMake\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u8a2d\u5b9a\uff08CMakeLists.txt\uff09<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">cmake_minimum_required(VERSION 3.10)\nproject(boost_asio_project)\n\nset(CMAKE_CXX_STANDARD 17)\nset(CMAKE_CXX_STANDARD_REQUIRED ON)\n\n# Boost\u306e\u691c\u7d22\nfind_package(Boost REQUIRED COMPONENTS system thread)\n\n# \u5b9f\u884c\u30d5\u30a1\u30a4\u30eb\u306e\u8ffd\u52a0\nadd_executable(main main.cpp)\n\n# Boost\u3068\u306e\u30ea\u30f3\u30af\ntarget_link_libraries(main PRIVATE\n    Boost::system\n    Boost::thread\n)<\/pre>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li><strong>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u57fa\u672c\u69cb\u9020<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">project_root\/\n\u251c\u2500\u2500 .vscode\/\n\u2502   \u251c\u2500\u2500 settings.json\n\u2502   \u2514\u2500\u2500 tasks.json\n\u251c\u2500\u2500 src\/\n\u2502   \u251c\u2500\u2500 main.cpp\n\u2502   \u2514\u2500\u2500 network\/\n\u2502       \u2514\u2500\u2500 async_server.hpp\n\u251c\u2500\u2500 CMakeLists.txt\n\u2514\u2500\u2500 .clang-format<\/pre>\n\n\n\n<ol start=\"5\" class=\"wp-block-list\">\n<li><strong>\u52d5\u4f5c\u78ba\u8a8d\u7528\u306e\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\uff08main.cpp\uff09<\/strong><\/li>\n<\/ol>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;boost\/asio.hpp&gt;\n#include &lt;iostream&gt;\n\nint main() {\n    try {\n        boost::asio::io_context io_context;\n        boost::asio::steady_timer timer(io_context, boost::asio::chrono::seconds(5));\n\n        timer.async_wait([](const boost::system::error_code&amp; error) {\n            if (!error) {\n                std::cout &lt;&lt; \"Timer expired!\" &lt;&lt; std::endl;\n            }\n        });\n\n        std::cout &lt;&lt; \"Starting io_context...\" &lt;&lt; std::endl;\n        io_context.run();\n\n    } catch (const std::exception&amp; e) {\n        std::cerr &lt;&lt; \"Exception: \" &lt;&lt; e.what() &lt;&lt; std::endl;\n        return 1;\n    }\n\n    return 0;\n}<\/pre>\n\n\n\n<p>\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\uff1a<\/p>\n\n\n<div id=\"id-1283f900-6f98-4c0d-87df-ef2e2f76505f\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u554f\u984c<\/th><th>\u539f\u56e0<\/th><th>\u89e3\u6c7a\u7b56<\/th><\/tr><\/thead><tbody><tr><td>Boost\u304c\u898b\u3064\u304b\u3089\u306a\u3044<\/td><td>\u30a4\u30f3\u30af\u30eb\u30fc\u30c9\u30d1\u30b9\u304c\u6b63\u3057\u304f\u306a\u3044<\/td><td>CMake\u306efind_package\u30d1\u30b9\u3092\u78ba\u8a8d<\/td><\/tr><tr><td>\u30ea\u30f3\u30af\u30a8\u30e9\u30fc<\/td><td>\u5fc5\u8981\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u4e0d\u8db3<\/td><td>target_link_libraries\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d<\/td><\/tr><tr><td>\u30d3\u30eb\u30c9\u30a8\u30e9\u30fc<\/td><td>\u30b3\u30f3\u30d1\u30a4\u30e9\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u4e0d\u4e00\u81f4<\/td><td>CMAKE_CXX_STANDARD\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3067\u57fa\u672c\u7684\u306a\u958b\u767a\u74b0\u5883\u306e\u69cb\u7bc9\u306f\u5b8c\u4e86\u3067\u3059\u3002\u6b21\u7bc0\u3067\u306f\u3001\u3053\u306e\u74b0\u5883\u3092\u4f7f\u7528\u3057\u3066\u5b9f\u969b\u306e\u30b5\u30fc\u30d0\u30fc\u5b9f\u88c5\u3092\u884c\u3063\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-10\">Boost.Asio\u306b\u3088\u308b\u9ad8\u6027\u80fd\u30b5\u30fc\u30d0\u30fc\u306e\u5b9f\u88c5\u624b\u9806<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-11\">\u57fa\u672c\u7684\u306aTCP\u30b5\u30fc\u30d0\u30fc\u306e\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u307e\u305a\u3001\u30b7\u30f3\u30d7\u30eb\u306aTCP\u30b5\u30fc\u30d0\u30fc\u306e\u57fa\u672c\u69cb\u9020\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002\u3053\u306e\u5b9f\u88c5\u3092\u57fa\u306b\u3001\u3088\u308a\u9ad8\u5ea6\u306a\u6a5f\u80fd\u3092\u6bb5\u968e\u7684\u306b\u8ffd\u52a0\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">#include &lt;boost\/asio.hpp&gt;\n#include &lt;iostream&gt;\n#include &lt;memory&gt;\n\nusing boost::asio::ip::tcp;\n\nclass tcp_server {\nprivate:\n    boost::asio::io_context&amp; io_context_;\n    tcp::acceptor acceptor_;\n\npublic:\n    \/\/ \u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u6307\u5b9a\n    tcp_server(boost::asio::io_context&amp; io_context, short port)\n        : io_context_(io_context)\n        , acceptor_(io_context, tcp::endpoint(tcp::v4(), port))\n    {\n        std::cout &lt;&lt; \"\u30b5\u30fc\u30d0\u30fc\u3092\u8d77\u52d5\u3057\u307e\u3057\u305f\u3002\u30dd\u30fc\u30c8: \" &lt;&lt; port &lt;&lt; std::endl;\n        start_accept();\n    }\n\nprivate:\n    \/\/ \u65b0\u3057\u3044\u63a5\u7d9a\u306e\u53d7\u3051\u5165\u308c\u3092\u958b\u59cb\n    void start_accept() {\n        auto socket = std::make_shared&lt;tcp::socket&gt;(io_context_);\n        acceptor_.async_accept(\n            *socket,\n            [this, socket](const boost::system::error_code&amp; error) {\n                if (!error) {\n                    handle_connection(socket);\n                }\n                start_accept();  \/\/ \u6b21\u306e\u63a5\u7d9a\u3092\u5f85\u3061\u53d7\u3051\n            });\n    }\n\n    \/\/ \u63a5\u7d9a\u306e\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\n    void handle_connection(std::shared_ptr&lt;tcp::socket&gt; socket) {\n        std::cout &lt;&lt; \"\u65b0\u3057\u3044\u63a5\u7d9a\u3092\u53d7\u3051\u4ed8\u3051\u307e\u3057\u305f: \" \n                  &lt;&lt; socket-&gt;remote_endpoint() &lt;&lt; std::endl;\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-12\">\u975e\u540c\u671f\u30a2\u30af\u30bb\u30d7\u30bf\u30fc\u306e\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u6b21\u306b\u3001\u52b9\u7387\u7684\u306a\u975e\u540c\u671f\u30a2\u30af\u30bb\u30d7\u30bf\u30fc\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u591a\u6570\u306e\u540c\u6642\u63a5\u7d9a\u3092\u51e6\u7406\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class async_tcp_server {\nprivate:\n    class connection : public std::enable_shared_from_this&lt;connection&gt; {\n        tcp::socket socket_;\n        std::vector&lt;char&gt; buffer_;\n\n    public:\n        connection(boost::asio::io_context&amp; io_context)\n            : socket_(io_context)\n            , buffer_(1024)\n        {}\n\n        tcp::socket&amp; socket() { return socket_; }\n\n        void start() {\n            auto self = shared_from_this();\n            socket_.async_read_some(\n                boost::asio::buffer(buffer_),\n                [this, self](const boost::system::error_code&amp; error, std::size_t bytes_transferred) {\n                    if (!error) {\n                        async_write(bytes_transferred);\n                    }\n                });\n        }\n\n    private:\n        void async_write(std::size_t length) {\n            auto self = shared_from_this();\n            boost::asio::async_write(\n                socket_,\n                boost::asio::buffer(buffer_, length),\n                [this, self](const boost::system::error_code&amp; error, std::size_t \/*bytes_transferred*\/) {\n                    if (!error) {\n                        start();  \/\/ \u6b21\u306e\u8aad\u307f\u8fbc\u307f\u3092\u958b\u59cb\n                    }\n                });\n        }\n    };\n\n    boost::asio::io_context&amp; io_context_;\n    tcp::acceptor acceptor_;\n\npublic:\n    async_tcp_server(boost::asio::io_context&amp; io_context, short port)\n        : io_context_(io_context)\n        , acceptor_(io_context, tcp::endpoint(tcp::v4(), port))\n    {\n        start_accept();\n    }\n\nprivate:\n    void start_accept() {\n        auto new_connection = std::make_shared&lt;connection&gt;(io_context_);\n\n        acceptor_.async_accept(\n            new_connection-&gt;socket(),\n            [this, new_connection](const boost::system::error_code&amp; error) {\n                if (!error) {\n                    new_connection-&gt;start();\n                }\n                start_accept();\n            });\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-13\">\u30bb\u30c3\u30b7\u30e7\u30f3\u7ba1\u7406\u306e\u5b9f\u88c5<\/h3>\n\n\n\n<p>\u6700\u5f8c\u306b\u3001\u63a5\u7d9a\u30bb\u30c3\u30b7\u30e7\u30f3\u3092\u52b9\u7387\u7684\u306b\u7ba1\u7406\u3059\u308b\u6a5f\u80fd\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class session_manager {\nprivate:\n    struct session_data {\n        std::string client_id;\n        std::chrono::steady_clock::time_point last_active;\n        std::weak_ptr&lt;connection&gt; conn;\n    };\n\n    std::unordered_map&lt;std::string, session_data&gt; sessions_;\n    boost::asio::steady_timer cleanup_timer_;\n    std::mutex mutex_;\n\npublic:\n    session_manager(boost::asio::io_context&amp; io_context)\n        : cleanup_timer_(io_context)\n    {\n        start_cleanup_timer();\n    }\n\n    void add_session(const std::string&amp; client_id, \n                    std::shared_ptr&lt;connection&gt; conn) {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n        sessions_[client_id] = {\n            client_id,\n            std::chrono::steady_clock::now(),\n            conn\n        };\n    }\n\n    void remove_session(const std::string&amp; client_id) {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n        sessions_.erase(client_id);\n    }\n\nprivate:\n    void start_cleanup_timer() {\n        cleanup_timer_.expires_after(std::chrono::minutes(5));\n        cleanup_timer_.async_wait(\n            [this](const boost::system::error_code&amp; error) {\n                if (!error) {\n                    cleanup_expired_sessions();\n                    start_cleanup_timer();\n                }\n            });\n    }\n\n    void cleanup_expired_sessions() {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n        auto now = std::chrono::steady_clock::now();\n\n        for (auto it = sessions_.begin(); it != sessions_.end();) {\n            if (now - it-&gt;second.last_active &gt; std::chrono::minutes(30)) {\n                it = sessions_.erase(it);\n            } else {\n                ++it;\n            }\n        }\n    }\n};<\/pre>\n\n\n\n<p>\u5b9f\u88c5\u306e\u30dd\u30a4\u30f3\u30c8\uff1a<\/p>\n\n\n<div id=\"id-d4457132-d5ae-4436-b8dc-9c707fb4a014\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6a5f\u80fd<\/th><th>\u5b9f\u88c5\u306e\u30dd\u30a4\u30f3\u30c8<\/th><th>\u30e1\u30ea\u30c3\u30c8<\/th><\/tr><\/thead><tbody><tr><td>\u975e\u540c\u671f\u30a2\u30af\u30bb\u30d7\u30c8<\/td><td>shared_from_this\u306e\u4f7f\u7528<\/td><td>\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u306e\u78ba\u4fdd<\/td><\/tr><tr><td>\u30d0\u30c3\u30d5\u30a1\u7ba1\u7406<\/td><td>\u9069\u5207\u306a\u30d0\u30c3\u30d5\u30a1\u30b5\u30a4\u30ba\u306e\u9078\u629e<\/td><td>\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u6700\u9069\u5316<\/td><\/tr><tr><td>\u30bb\u30c3\u30b7\u30e7\u30f3\u7ba1\u7406<\/td><td>\u30b9\u30ec\u30c3\u30c9\u30bb\u30fc\u30d5\u306a\u5b9f\u88c5<\/td><td>\u5b89\u5168\u306a\u4e26\u884c\u51e6\u7406<\/td><\/tr><tr><td>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/td><td>\u9069\u5207\u306a\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u5b9f\u88c5<\/td><td>\u5805\u7262\u6027\u306e\u5411\u4e0a<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u30b5\u30fc\u30d0\u30fc\u306e\u4f7f\u7528\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">int main() {\n    try {\n        boost::asio::io_context io_context;\n\n        \/\/ \u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u306e\u4f5c\u6210\n        boost::asio::executor_work_guard&lt;boost::asio::io_context::executor_type&gt;\n            work_guard(io_context.get_executor());\n\n        std::vector&lt;std::thread&gt; threads;\n        for (int i = 0; i &lt; std::thread::hardware_concurrency(); ++i) {\n            threads.emplace_back([&amp;io_context]() {\n                io_context.run();\n            });\n        }\n\n        \/\/ \u30b5\u30fc\u30d0\u30fc\u306e\u8d77\u52d5\n        async_tcp_server server(io_context, 8080);\n\n        \/\/ \u30e1\u30a4\u30f3\u30b9\u30ec\u30c3\u30c9\u3067\u3082io_context\u3092\u5b9f\u884c\n        io_context.run();\n\n        \/\/ \u30b9\u30ec\u30c3\u30c9\u306e\u7d42\u4e86\u5f85\u3061\n        for (auto&amp; thread : threads) {\n            thread.join();\n        }\n\n    } catch (const std::exception&amp; e) {\n        std::cerr &lt;&lt; \"Exception: \" &lt;&lt; e.what() &lt;&lt; std::endl;\n        return 1;\n    }\n\n    return 0;\n}<\/pre>\n\n\n\n<p>\u3053\u306e\u5b9f\u88c5\u306b\u3088\u308a\u3001\u9ad8\u6027\u80fd\u3067\u4fe1\u983c\u6027\u306e\u9ad8\u3044TCP\u30b5\u30fc\u30d0\u30fc\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002\u6b21\u7bc0\u3067\u306f\u3001\u3053\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u304a\u3051\u308b\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u6226\u7565\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-14\">Boost.Asio\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u6226\u7565<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-15\">\u4e00\u822c\u7684\u306a\u30a8\u30e9\u30fc\u30d1\u30bf\u30fc\u30f3\u3068\u5bfe\u51e6\u6cd5<\/h3>\n\n\n\n<p>Boost.Asio\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u906d\u9047\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u4e3b\u306a\u30a8\u30e9\u30fc\u30d1\u30bf\u30fc\u30f3\u3068\u3001\u305d\u306e\u52b9\u679c\u7684\u306a\u5bfe\u51e6\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u63a5\u7d9a\u95a2\u9023\u306e\u30a8\u30e9\u30fc\u51e6\u7406<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">void handle_connect(\n    const boost::system::error_code&amp; error,\n    const tcp::endpoint&amp; endpoint)\n{\n    if (error) {\n        if (error == boost::asio::error::connection_refused) {\n            \/\/ \u63a5\u7d9a\u304c\u62d2\u5426\u3055\u308c\u305f\u5834\u5408\u306e\u518d\u8a66\u884c\u30ed\u30b8\u30c3\u30af\n            retry_connect(endpoint, retry_count_++);\n        } else if (error == boost::asio::error::timed_out) {\n            \/\/ \u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u6642\u306e\u51e6\u7406\n            handle_timeout();\n        } else {\n            \/\/ \u305d\u306e\u4ed6\u306e\u30a8\u30e9\u30fc\u51e6\u7406\n            log_error(\"\u63a5\u7d9a\u30a8\u30e9\u30fc: \", error.message());\n        }\n        return;\n    }\n\n    \/\/ \u63a5\u7d9a\u6210\u529f\u6642\u306e\u51e6\u7406\n    start_communication();\n}\n\n\/\/ \u518d\u8a66\u884c\u30ed\u30b8\u30c3\u30af\u306e\u5b9f\u88c5\nvoid retry_connect(const tcp::endpoint&amp; endpoint, int retry_count) {\n    if (retry_count &lt; MAX_RETRY_COUNT) {\n        \/\/ \u6307\u6570\u30d0\u30c3\u30af\u30aa\u30d5\u306b\u3088\u308b\u5f85\u6a5f\n        auto delay = std::chrono::milliseconds(100 * (1 &lt;&lt; retry_count));\n        timer_.expires_after(delay);\n        timer_.async_wait([this, endpoint](const boost::system::error_code&amp; error) {\n            if (!error) {\n                socket_.async_connect(endpoint,\n                    std::bind(&amp;client::handle_connect, this,\n                        std::placeholders::_1, endpoint));\n            }\n        });\n    } else {\n        log_error(\"\u6700\u5927\u518d\u8a66\u884c\u56de\u6570\u3092\u8d85\u904e\u3057\u307e\u3057\u305f\");\n    }\n}<\/pre>\n\n\n\n<p><strong>2. \u975e\u540c\u671f\u64cd\u4f5c\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class async_operation_handler {\nprivate:\n    enum class State {\n        INITIAL,\n        READING,\n        WRITING,\n        COMPLETED,\n        ERROR\n    };\n\n    State current_state_ = State::INITIAL;\n    boost::system::error_code last_error_;\n\npublic:\n    void handle_async_operation(const boost::system::error_code&amp; error) {\n        if (error) {\n            switch (current_state_) {\n                case State::READING:\n                    handle_read_error(error);\n                    break;\n                case State::WRITING:\n                    handle_write_error(error);\n                    break;\n                default:\n                    handle_generic_error(error);\n                    break;\n            }\n            current_state_ = State::ERROR;\n            last_error_ = error;\n            return;\n        }\n\n        proceed_to_next_state();\n    }\n\nprivate:\n    void handle_read_error(const boost::system::error_code&amp; error) {\n        if (error == boost::asio::error::eof) {\n            \/\/ \u6b63\u5e38\u306a\u63a5\u7d9a\u7d42\u4e86\n            log_info(\"\u63a5\u7d9a\u304c\u6b63\u5e38\u306b\u7d42\u4e86\u3057\u307e\u3057\u305f\");\n        } else if (error == boost::asio::error::operation_aborted) {\n            \/\/ \u30ad\u30e3\u30f3\u30bb\u30eb\u3055\u308c\u305f\u64cd\u4f5c\n            log_info(\"\u64cd\u4f5c\u304c\u30ad\u30e3\u30f3\u30bb\u30eb\u3055\u308c\u307e\u3057\u305f\");\n        } else {\n            \/\/ \u305d\u306e\u4ed6\u306e\u8aad\u307f\u8fbc\u307f\u30a8\u30e9\u30fc\n            log_error(\"\u8aad\u307f\u8fbc\u307f\u30a8\u30e9\u30fc: \", error.message());\n        }\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-16\">\u4f8b\u5916\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u306e\u66f8\u304d\u65b9<\/h3>\n\n\n\n<p>Boost.Asio\u3092\u4f7f\u7528\u3059\u308b\u969b\u306e\u4f8b\u5916\u5b89\u5168\u306a\u30b3\u30fc\u30c9\u306e\u5b9f\u88c5\u30d1\u30bf\u30fc\u30f3\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p><strong>1. RAII\u306b\u3088\u308b\u30ea\u30bd\u30fc\u30b9\u7ba1\u7406<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class safe_socket {\nprivate:\n    boost::asio::ip::tcp::socket socket_;\n    std::mutex mutex_;\n    bool is_open_ = false;\n\npublic:\n    safe_socket(boost::asio::io_context&amp; io_context)\n        : socket_(io_context)\n    {}\n\n    ~safe_socket() {\n        close();\n    }\n\n    void close() {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n        if (is_open_) {\n            boost::system::error_code ec;\n            socket_.close(ec);\n            is_open_ = false;\n        }\n    }\n\n    template&lt;typename CompletionHandler&gt;\n    void async_read(boost::asio::mutable_buffer buffer,\n                   CompletionHandler&amp;&amp; handler) {\n        std::lock_guard&lt;std::mutex&gt; lock(mutex_);\n        if (!is_open_) {\n            throw std::runtime_error(\"\u30bd\u30b1\u30c3\u30c8\u304c\u9589\u3058\u3066\u3044\u307e\u3059\");\n        }\n        socket_.async_read_some(buffer, std::forward&lt;CompletionHandler&gt;(handler));\n    }\n};<\/pre>\n\n\n\n<p><strong>2. \u30a8\u30e9\u30fc\u72b6\u614b\u306e\u8ffd\u8de1\u3068\u56de\u5fa9<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class error_tracking_session : public std::enable_shared_from_this&lt;error_tracking_session&gt; {\nprivate:\n    enum class ErrorSeverity {\n        MINOR,      \/\/ \u8efd\u5fae\u306a\u30a8\u30e9\u30fc\u3001\u518d\u8a66\u884c\u53ef\u80fd\n        MODERATE,   \/\/ \u4e2d\u7a0b\u5ea6\u306e\u30a8\u30e9\u30fc\u3001\u4e00\u90e8\u306e\u6a5f\u80fd\u306b\u5f71\u97ff\n        SEVERE      \/\/ \u91cd\u5927\u306a\u30a8\u30e9\u30fc\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u7d42\u4e86\u304c\u5fc5\u8981\n    };\n\n    struct ErrorState {\n        boost::system::error_code error;\n        ErrorSeverity severity;\n        std::chrono::steady_clock::time_point timestamp;\n        int retry_count;\n    };\n\n    std::vector&lt;ErrorState&gt; error_history_;\n    std::mutex error_mutex_;\n\npublic:\n    void track_error(const boost::system::error_code&amp; error) {\n        std::lock_guard&lt;std::mutex&gt; lock(error_mutex_);\n\n        ErrorSeverity severity = classify_error(error);\n        error_history_.push_back({\n            error,\n            severity,\n            std::chrono::steady_clock::now(),\n            0\n        });\n\n        if (should_attempt_recovery(severity)) {\n            initiate_recovery();\n        } else {\n            terminate_session();\n        }\n    }\n\nprivate:\n    ErrorSeverity classify_error(const boost::system::error_code&amp; error) {\n        if (error == boost::asio::error::operation_aborted ||\n            error == boost::asio::error::connection_reset) {\n            return ErrorSeverity::SEVERE;\n        }\n        \/\/ \u305d\u306e\u4ed6\u306e\u30a8\u30e9\u30fc\u5206\u985e\u30ed\u30b8\u30c3\u30af\n        return ErrorSeverity::MINOR;\n    }\n};<\/pre>\n\n\n\n<p>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n<div id=\"id-a7dae13f-7806-4565-b762-e4baeb4894b1\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30ab\u30c6\u30b4\u30ea\u30fc<\/th><th>\u63a8\u5968\u4e8b\u9805<\/th><th>\u7406\u7531<\/th><\/tr><\/thead><tbody><tr><td>\u4f8b\u5916\u51e6\u7406<\/td><td>try-catch\u30d6\u30ed\u30c3\u30af\u306e\u9069\u5207\u306a\u914d\u7f6e<\/td><td>\u30ea\u30bd\u30fc\u30b9\u30ea\u30fc\u30af\u306e\u9632\u6b62<\/td><\/tr><tr><td>\u30a8\u30e9\u30fc\u30ed\u30b0<\/td><td>\u69cb\u9020\u5316\u30ed\u30b0\u306e\u4f7f\u7528<\/td><td>\u30c7\u30d0\u30c3\u30b0\u3068\u30c8\u30e9\u30d6\u30eb\u30b7\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u52b9\u7387\u5316<\/td><\/tr><tr><td>\u72b6\u614b\u7ba1\u7406<\/td><td>\u660e\u793a\u7684\u306a\u72b6\u614b\u9077\u79fb\u306e\u5b9f\u88c5<\/td><td>\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u6319\u52d5\u306e\u4e88\u6e2c\u53ef\u80fd\u6027\u5411\u4e0a<\/td><\/tr><tr><td>\u30ea\u30ab\u30d0\u30ea\u30fc<\/td><td>\u6bb5\u968e\u7684\u306a\u56de\u5fa9\u6226\u7565\u306e\u5b9f\u88c5<\/td><td>\u30b7\u30b9\u30c6\u30e0\u306e\u8010\u969c\u5bb3\u6027\u5411\u4e0a<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u6226\u7565\u3092\u9069\u5207\u306b\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u3001\u3088\u308a\u5805\u7262\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3067\u304d\u307e\u3059\u3002\u6b21\u7bc0\u3067\u306f\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u306b\u3064\u3044\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-17\">Boost.Asio\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-18\">\u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u306e\u6b63\u3057\u3044\u8a2d\u5b9a<\/h3>\n\n\n\n<p>Boost.Asio\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u6700\u5927\u9650\u306b\u5f15\u304d\u51fa\u3059\u305f\u3081\u306b\u3001\u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u306e\u9069\u5207\u306a\u8a2d\u5b9a\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u30b5\u30a4\u30ba\u306e\u6700\u9069\u5316<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class optimized_thread_pool {\nprivate:\n    boost::asio::io_context io_context_;\n    std::vector&lt;std::thread&gt; threads_;\n    boost::asio::executor_work_guard&lt;boost::asio::io_context::executor_type&gt; work_guard_;\n\npublic:\n    optimized_thread_pool(size_t thread_count = 0)\n        : work_guard_(boost::asio::make_work_guard(io_context_))\n    {\n        \/\/ \u30b9\u30ec\u30c3\u30c9\u6570\u306e\u81ea\u52d5\u8abf\u6574\n        if (thread_count == 0) {\n            thread_count = std::max(2u, std::thread::hardware_concurrency());\n            \/\/ I\/O\u5f85\u3061\u306e\u591a\u3044\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u306e\u5834\u5408\u306f1.5\u500d\u306b\n            thread_count = static_cast&lt;size_t&gt;(thread_count * 1.5);\n        }\n\n        \/\/ \u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u306e\u521d\u671f\u5316\n        threads_.reserve(thread_count);\n        for (size_t i = 0; i &lt; thread_count; ++i) {\n            threads_.emplace_back([this]() {\n                \/\/ \u30b9\u30ec\u30c3\u30c9\u306e\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u8a2d\u5b9a\n                set_thread_affinity(i);\n                io_context_.run();\n            });\n        }\n    }\n\nprivate:\n    void set_thread_affinity(size_t thread_index) {\n        #ifdef _WIN32\n            SetThreadAffinityMask(GetCurrentThread(), 1ULL &lt;&lt; thread_index);\n        #elif defined(__linux__)\n            cpu_set_t cpuset;\n            CPU_ZERO(&amp;cpuset);\n            CPU_SET(thread_index % CPU_SETSIZE, &amp;cpuset);\n            pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &amp;cpuset);\n        #endif\n    }\n};<\/pre>\n\n\n\n<p>\u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb\u8a2d\u5b9a\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\uff1a<\/p>\n\n\n<div id=\"id-6b52223c-eba8-47a3-8d59-8957e9fe18df\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30d1\u30e9\u30e1\u30fc\u30bf<\/th><th>\u63a8\u5968\u5024<\/th><th>\u8003\u616e\u4e8b\u9805<\/th><\/tr><\/thead><tbody><tr><td>\u57fa\u672c\u30b9\u30ec\u30c3\u30c9\u6570<\/td><td>CPU\u8ad6\u7406\u30b3\u30a2\u6570<\/td><td>\u30b7\u30b9\u30c6\u30e0\u30ea\u30bd\u30fc\u30b9\u306e\u52b9\u7387\u7684\u306a\u5229\u7528<\/td><\/tr><tr><td>I\/O\u91cd\u8996\u306e\u5834\u5408<\/td><td>CPU\u8ad6\u7406\u30b3\u30a2\u6570\u00d71.5<\/td><td>I\/O\u5f85\u3061\u6642\u9593\u306e\u96a0\u853d<\/td><\/tr><tr><td>CPU\u91cd\u8996\u306e\u5834\u5408<\/td><td>CPU\u8ad6\u7406\u30b3\u30a2\u6570\u00d71<\/td><td>\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u30b9\u30a4\u30c3\u30c1\u306e\u6700\u5c0f\u5316<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"i-19\">\u30d0\u30c3\u30d5\u30a1\u7ba1\u7406\u306e\u6700\u9069\u5316<\/h3>\n\n\n\n<p>\u52b9\u7387\u7684\u306a\u30d0\u30c3\u30d5\u30a1\u7ba1\u7406\u306f\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u4e21\u9762\u3067\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p><strong>1. \u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u306e\u5b9f\u88c5<\/strong><\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">template&lt;typename T&gt;\nclass pool_allocator {\nprivate:\n    boost::pool&lt;&gt; pool_;\n    static constexpr size_t chunk_size = 4096;  \/\/ \u30da\u30fc\u30b8\u30b5\u30a4\u30ba\u306b\u5408\u308f\u305b\u308b\n\npublic:\n    using value_type = T;\n\n    pool_allocator() : pool_(sizeof(T)) {}\n\n    T* allocate(std::size_t n) {\n        if (n * sizeof(T) &lt;= chunk_size) {\n            return static_cast&lt;T*&gt;(pool_.malloc());\n        }\n        return static_cast&lt;T*&gt;(::operator new(n * sizeof(T)));\n    }\n\n    void deallocate(T* p, std::size_t n) {\n        if (n * sizeof(T) &lt;= chunk_size) {\n            pool_.free(p);\n        } else {\n            ::operator delete(p);\n        }\n    }\n};\n\n\/\/ \u6700\u9069\u5316\u3055\u308c\u305f\u30d0\u30c3\u30d5\u30a1\u30af\u30e9\u30b9\ntemplate&lt;typename T&gt;\nclass optimized_buffer {\n    std::vector&lt;T, pool_allocator&lt;T&gt;&gt; data_;\n    size_t read_pos_ = 0;\n    size_t write_pos_ = 0;\n\npublic:\n    explicit optimized_buffer(size_t initial_size = 1024)\n        : data_(initial_size) {}\n\n    boost::asio::mutable_buffer prepare(size_t size) {\n        if (write_pos_ + size &gt; data_.size()) {\n            \/\/ \u30d0\u30c3\u30d5\u30a1\u306e\u81ea\u52d5\u62e1\u5f35\n            data_.resize(std::max(data_.size() * 2, write_pos_ + size));\n        }\n        return boost::asio::buffer(data_.data() + write_pos_, size);\n    }\n\n    void commit(size_t size) {\n        write_pos_ += size;\n    }\n\n    boost::asio::const_buffer data() const {\n        return boost::asio::buffer(data_.data() + read_pos_, \n                                 write_pos_ - read_pos_);\n    }\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-20\">\u975e\u540c\u671f\u64cd\u4f5c\u306e\u30c1\u30a7\u30fc\u30f3\u5316<\/h3>\n\n\n\n<p>\u52b9\u7387\u7684\u306a\u975e\u540c\u671f\u64cd\u4f5c\u30c1\u30a7\u30fc\u30f3\u306e\u5b9f\u88c5\u306b\u3088\u308a\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class optimized_async_chain {\nprivate:\n    boost::asio::io_context&amp; io_context_;\n    std::shared_ptr&lt;optimized_buffer&lt;char&gt;&gt; buffer_;\n    std::atomic&lt;size_t&gt; active_operations_{0};\n\npublic:\n    template&lt;typename CompletionToken&gt;\n    auto async_process_chain(CompletionToken&amp;&amp; token) {\n        return boost::asio::async_compose&lt;CompletionToken, void(boost::system::error_code)&gt;(\n            [this](auto&amp; self) {\n                start_chain(std::move(self));\n            },\n            token,\n            io_context_);\n    }\n\nprivate:\n    template&lt;typename Self&gt;\n    void start_chain(Self self) {\n        \/\/ \u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u51e6\u7406\u306e\u958b\u59cb\n        active_operations_++;\n\n        auto on_complete = [this, self = std::move(self)]\n            (const boost::system::error_code&amp; error) {\n            if (--active_operations_ == 0) {\n                self.complete(error);\n            }\n        };\n\n        \/\/ \u4e26\u5217\u51e6\u7406\u306e\u958b\u59cb\n        for (size_t i = 0; i &lt; 3; ++i) {\n            process_stage(i, on_complete);\n        }\n    }\n\n    void process_stage(size_t stage, \n                      std::function&lt;void(boost::system::error_code)&gt; callback) {\n        boost::asio::post(io_context_, [this, stage, callback]() {\n            \/\/ \u30b9\u30c6\u30fc\u30b8\u56fa\u6709\u306e\u51e6\u7406\n            callback(boost::system::error_code{});\n        });\n    }\n};<\/pre>\n\n\n\n<p>\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u306e\u30c1\u30a7\u30c3\u30af\u30ea\u30b9\u30c8\uff1a<\/p>\n\n\n<div id=\"id-f48978c3-26a1-4ce9-a62a-e3e0992e127f\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6700\u9069\u5316\u9805\u76ee<\/th><th>\u5b9f\u88c5\u30dd\u30a4\u30f3\u30c8<\/th><th>\u671f\u5f85\u3055\u308c\u308b\u52b9\u679c<\/th><\/tr><\/thead><tbody><tr><td>\u30b9\u30ec\u30c3\u30c9\u30d7\u30fc\u30eb<\/td><td>\u30a2\u30d5\u30a3\u30cb\u30c6\u30a3\u8a2d\u5b9a\u3001\u30b5\u30a4\u30ba\u6700\u9069\u5316<\/td><td>CPU\u4f7f\u7528\u52b9\u7387\u306e\u5411\u4e0a<\/td><\/tr><tr><td>\u30d0\u30c3\u30d5\u30a1\u7ba1\u7406<\/td><td>\u30ab\u30b9\u30bf\u30e0\u30a2\u30ed\u30b1\u30fc\u30bf\u3001\u30b5\u30a4\u30ba\u8abf\u6574<\/td><td>\u30e1\u30e2\u30ea\u52b9\u7387\u306e\u6539\u5584<\/td><\/tr><tr><td>\u975e\u540c\u671f\u30c1\u30a7\u30fc\u30f3<\/td><td>\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u51e6\u7406\u3001\u4e26\u5217\u5b9f\u884c<\/td><td>\u30ec\u30a4\u30c6\u30f3\u30b7\u306e\u524a\u6e1b<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u6700\u9069\u5316\u30c6\u30af\u30cb\u30c3\u30af\u3092\u9069\u5207\u306b\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u6027\u80fd\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u6b21\u7bc0\u3067\u306f\u3001\u3053\u308c\u3089\u306e\u6280\u8853\u3092\u6d3b\u7528\u3057\u305f\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-21\">Boost.Asio\u306e\u5b9f\u8df5\u7684\u306a\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-22\">HTTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u5b9f\u88c5\u4f8b<\/h3>\n\n\n\n<p>\u30e2\u30c0\u30f3\u306aHTTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u5b9f\u88c5\u4f8b\u3092\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u975e\u540c\u671f\u51e6\u7406\u3068\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class http_client {\nprivate:\n    boost::asio::io_context&amp; io_context_;\n    tcp::resolver resolver_;\n    tcp::socket socket_;\n    boost::asio::streambuf request_;\n    boost::asio::streambuf response_;\n\npublic:\n    http_client(boost::asio::io_context&amp; io_context)\n        : io_context_(io_context)\n        , resolver_(io_context)\n        , socket_(io_context)\n    {}\n\n    template&lt;typename CompletionToken&gt;\n    auto async_get(const std::string&amp; host, \n                  const std::string&amp; path,\n                  CompletionToken&amp;&amp; token) {\n        return boost::asio::async_compose&lt;CompletionToken, \n            void(boost::system::error_code, std::string)&gt;(\n            [this, host, path](auto&amp; self) {\n                start_request(host, path, std::move(self));\n            },\n            token,\n            io_context_);\n    }\n\nprivate:\n    template&lt;typename Self&gt;\n    void start_request(const std::string&amp; host, \n                      const std::string&amp; path,\n                      Self self) {\n        \/\/ HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u69cb\u7bc9\n        std::ostream request_stream(&amp;request_);\n        request_stream &lt;&lt; \"GET \" &lt;&lt; path &lt;&lt; \" HTTP\/1.1\\r\\n\";\n        request_stream &lt;&lt; \"Host: \" &lt;&lt; host &lt;&lt; \"\\r\\n\";\n        request_stream &lt;&lt; \"Connection: close\\r\\n\\r\\n\";\n\n        \/\/ \u540d\u524d\u89e3\u6c7a\u3092\u958b\u59cb\n        resolver_.async_resolve(host, \"http\",<\/pre>\n\n\n[this, self = std::move(self)]\n\n\n\n<p>(const boost::system::error_code&amp; error, tcp::resolver::results_type endpoints) { if (!error) { async_connect(endpoints, std::move(self)); } else { self.complete(error, \u201c\u201d); } }); } template&lt;typename Self&gt; void async_connect(const tcp::resolver::results_type&amp; endpoints, Self self) { boost::asio::async_connect(socket_, endpoints,<\/p>\n\n\n[this, self = std::move(self)]\n\n\n\n<p>(const boost::system::error_code&amp; error, const tcp::endpoint&amp;) { if (!error) { send_request(std::move(self)); } else { self.complete(error, \u201c\u201d); } }); } \/\/ \u2026 \u4ee5\u4e0b\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u9001\u4fe1\u3068\u5fdc\u7b54\u53d7\u4fe1\u306e\u5b9f\u88c5 \u2026 };<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-23\">WebSocket\u30b5\u30fc\u30d0\u30fc\u306e\u5b9f\u88c5\u4f8b<\/h3>\n\n\n\n<p>\u30ea\u30a2\u30eb\u30bf\u30a4\u30e0\u901a\u4fe1\u3092\u5b9f\u73fe\u3059\u308bWebSocket\u30b5\u30fc\u30d0\u30fc\u306e\u5b9f\u88c5\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class websocket_server {\nprivate:\n    using websocket = boost::beast::websocket::stream&lt;tcp::socket&gt;;\n\n    class session : public std::enable_shared_from_this&lt;session&gt; {\n        websocket ws_;\n        boost::beast::flat_buffer buffer_;\n        std::queue&lt;std::string&gt; message_queue_;\n        std::mutex queue_mutex_;\n\n    public:\n        explicit session(tcp::socket socket)\n            : ws_(std::move(socket))\n        {\n            ws_.set_option(boost::beast::websocket::stream_base::timeout::suggested(\n                boost::beast::role_type::server));\n        }\n\n        void start() {\n            ws_.async_accept(\n                boost::beast::bind_front_handler(\n                    &amp;session::on_accept,\n                    shared_from_this()));\n        }\n\n        void send_message(std::string message) {\n            std::lock_guard&lt;std::mutex&gt; lock(queue_mutex_);\n            bool empty = message_queue_.empty();\n            message_queue_.push(std::move(message));\n\n            if (empty) {\n                do_write();\n            }\n        }\n\n    private:\n        void do_read() {\n            ws_.async_read(\n                buffer_,\n                boost::beast::bind_front_handler(\n                    &amp;session::on_read,\n                    shared_from_this()));\n        }\n\n        void do_write() {\n            auto self = shared_from_this();\n            ws_.async_write(\n                boost::asio::buffer(message_queue_.front()),\n                [self](boost::system::error_code ec, std::size_t) {\n                    self-&gt;on_write(ec);\n                });\n        }\n\n        \/\/ ... \u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3068\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\u306e\u5b9f\u88c5 ...\n    };\n};<\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"i-24\">UDP\u30d9\u30fc\u30b9\u306e\u30b2\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u5b9f\u88c5\u4f8b<\/h3>\n\n\n\n<p>\u4f4e\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u304c\u8981\u6c42\u3055\u308c\u308b\u30b2\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc\u306e\u5b9f\u88c5\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">class game_server {\nprivate:\n    boost::asio::io_context&amp; io_context_;\n    udp::socket socket_;\n    std::unordered_map&lt;udp::endpoint, player_state&gt; players_;\n    std::mutex players_mutex_;\n    boost::asio::steady_timer update_timer_;\n\n    struct player_state {\n        vector2d position;\n        vector2d velocity;\n        std::chrono::steady_clock::time_point last_update;\n    };\n\npublic:\n    game_server(boost::asio::io_context&amp; io_context, unsigned short port)\n        : io_context_(io_context)\n        , socket_(io_context, udp::endpoint(udp::v4(), port))\n        , update_timer_(io_context)\n    {\n        start_receive();\n        start_game_loop();\n    }\n\nprivate:\n    void start_receive() {\n        auto buffer = std::make_shared&lt;std::array&lt;char, 1024&gt;&gt;();\n        auto remote_endpoint = std::make_shared&lt;udp::endpoint&gt;();\n\n        socket_.async_receive_from(\n            boost::asio::buffer(*buffer), *remote_endpoint,<\/pre>\n\n\n[this, buffer, remote_endpoint]\n\n\n\n<p>(const boost::system::error_code&amp; error, std::size_t bytes_transferred) { if (!error) { handle_receive(*buffer, bytes_transferred, *remote_endpoint); } start_receive(); }); } void start_game_loop() { update_timer_.expires_after(std::chrono::milliseconds(16)); \/\/ 60 FPS update_timer_.async_wait( [this](const boost::system::error_code&amp; error) { if (!error) { update_game_state(); broadcast_game_state(); start_game_loop(); } }); } \/\/ \u2026 \u30b2\u30fc\u30e0\u72b6\u614b\u306e\u66f4\u65b0\u3068\u540c\u671f\u306e\u5b9f\u88c5 \u2026 };<\/p>\n\n\n\n<p>\u5b9f\u88c5\u306e\u30dd\u30a4\u30f3\u30c8\u3068\u6ce8\u610f\u4e8b\u9805\uff1a<\/p>\n\n\n<div id=\"id-5c81a559-ee42-4e7c-9577-286621c3175e\">\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9<\/th><th>\u91cd\u8981\u306a\u8003\u616e\u70b9<\/th><th>\u5b9f\u88c5\u306e\u30b3\u30c4<\/th><\/tr><\/thead><tbody><tr><td>HTTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8<\/td><td>\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u51e6\u7406\u3001\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u5bfe\u5fdc<\/td><td>\u975e\u540c\u671f\u30c1\u30a7\u30fc\u30f3\u306e\u6d3b\u7528<\/td><\/tr><tr><td>WebSocket\u30b5\u30fc\u30d0\u30fc<\/td><td>\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30ad\u30e5\u30fc\u7ba1\u7406\u3001\u4e26\u884c\u63a5\u7d9a<\/td><td>\u30bb\u30c3\u30b7\u30e7\u30f3\u72b6\u614b\u306e\u9069\u5207\u306a\u7ba1\u7406<\/td><\/tr><tr><td>\u30b2\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc<\/td><td>\u72b6\u614b\u540c\u671f\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u30fc\u6700\u5c0f\u5316<\/td><td>UDP\u306e\u7279\u6027\u3092\u6d3b\u304b\u3057\u305f\u8a2d\u8a08<\/td><\/tr><\/tbody><\/table><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u4f8b\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u4e3b\u8981\u306a\u30c6\u30af\u30cb\u30c3\u30af\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>HTTP\u30af\u30e9\u30a4\u30a2\u30f3\u30c8<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u975e\u540c\u671f\u540d\u524d\u89e3\u6c7a<\/li>\n\n\n\n<li>\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u5316\u3055\u308c\u305f\u30ea\u30af\u30a8\u30b9\u30c8\u51e6\u7406<\/li>\n\n\n\n<li>\u30a8\u30e9\u30fc\u56de\u5fa9\u30e1\u30ab\u30cb\u30ba\u30e0<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>WebSocket\u30b5\u30fc\u30d0\u30fc<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u30e1\u30c3\u30bb\u30fc\u30b8\u30ad\u30e5\u30fc\u30a4\u30f3\u30b0<\/li>\n\n\n\n<li>\u53cc\u65b9\u5411\u901a\u4fe1\u306e\u7ba1\u7406<\/li>\n\n\n\n<li>\u30bb\u30c3\u30b7\u30e7\u30f3\u30e9\u30a4\u30d5\u30b5\u30a4\u30af\u30eb\u7ba1\u7406<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u30b2\u30fc\u30e0\u30b5\u30fc\u30d0\u30fc<\/strong><\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9ad8\u983b\u5ea6\u306e\u72b6\u614b\u66f4\u65b0<\/li>\n\n\n\n<li>\u52b9\u7387\u7684\u306a\u30d6\u30ed\u30fc\u30c9\u30ad\u30e3\u30b9\u30c8<\/li>\n\n\n\n<li>\u4e88\u6e2c\u88dc\u9593\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u5b9f\u88c5\u4f8b\u306f\u3001Boost.Asio\u306e\u6a5f\u80fd\u3092\u5b9f\u8df5\u7684\u306b\u6d3b\u7528\u3059\u308b\u65b9\u6cd5\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002\u5b9f\u969b\u306e\u958b\u767a\u3067\u306f\u3001\u3053\u308c\u3089\u3092\u57fa\u790e\u3068\u3057\u3066\u3001\u5177\u4f53\u7684\u306a\u8981\u4ef6\u306b\u5fdc\u3058\u305f\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u52b9\u7387\u7684\u3067\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u69cb\u7bc9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Warning: Undefined array key &#8220;is_admin&#8221; in \/home\/xs392991\/dexall.co.jp\/public_html\/articles\/wp-content\/themes\/ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":{"0":"post-2153","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-cpp","7":"nothumb"},"_links":{"self":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2153","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2153"}],"version-history":[{"count":1,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2153\/revisions"}],"predecessor-version":[{"id":2154,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=\/wp\/v2\/posts\/2153\/revisions\/2154"}],"wp:attachment":[{"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dexall.co.jp\/articles\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}